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Rockwell Automation 873M Ultrasonic Discrete Sensors Installation Instructions User Manual

Discrete output mode

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Installation Instructions

Ultrasonic Discrete Sensors

IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.

Specifications

General

300 mm Models

800 mm Models

Sensing range [mm (in.)]

30…300
(1.18…11.81)

50…800
(1.96…31.49)

Adjustment range [mm (in.)]

50…300
(1.96…11.81)

70…800
(2.75…31.49)

Blind Zone [mm (in.)]

0…30 (0…1.18)

0…50 (0…0.96 )

Standard target [mm (in.)]

100 x 100 (3.93 x 3.93)

Frequency

Approx. 390 kHz

Approx. 255 kHz

Response delay

Approx. 30 ms

Approx. 100 ms

Operating temperature [C (F)] -25…70° (-13…158°)

Storage temperature [C (F)]

-40…85° (-40…185°)

Electrical

Operating voltage

10…30V DC

Output current

200 mA

Current consumption

≤20 mA

Protection type

Short-circuit, reverse polarity, overload

Voltage drop

<3V

Output

Output type

Discrete-PNP with N.O./N.C.

Output Rating

200 mA max.

Repeatability

<1%

Switching frequency

<13 Hz

<4 Hz

Hysteresis

1% of the set operating distance

Sensitivity adjustment

Remote teach/optional programming
cable

Environmental

Enclosure type rating

IP67

Shock

30 g, 11 ms

Housing material

Brass, nickel-plated

Connection

Micro-quick disconnect

Certifications

cULus Listed and CE Marked for all
applicable directives

Models to be covered:

873M-D18PO300-D4
873M-D18RPO300-D4
873M-D18PO800-D4
873M-D18RPO800-D4

Discrete Output Mode

• Discrete sensors feature normally-open/normally-closed

PNP outputs.

• Includes two teachable set points and multiple output

functions.

• The upper and lower sensing range can be scaled to a

distance-fixed window.

• The sensor is taught using an easy four-step remote teach

process or an optional programming cord.

LED Displays

Operating Mode

Red LED

Yellow LED

Green LED

Teach Mode

Target detected

One flash

Continuous

flash

Off

No target detected

Flashes

Off

Target marginal (invalid
teach)

Standard Mode

Target present

Off

On

On

Target not present

Off

Solid-state devices can be susceptible to
radio frequency (RF) interference
depending on the power and the frequency
of the transmitting source. If RF
transmitting equipment is to be used in the
vicinity of the solid-state devices, thorough
testing should be performed to assure that
transmitter operation is restricted to a safe
operating distance from the sensor
equipment and its wiring.

IMPORTANT

ATTENTION

If a hazardous condition can result from
unintended operation of this device, access
to the sensing area should be guarded.